How to Insert Data in Database through DataGridView in Windows Form Application C#

I am making a windows form application in c# , in which  there is a  grid view control which is bind to SQL server database. All want, to let user press CTRL + N and a new row appears as the first row of grid view and on entering data in that row, data should be inserted into database by pressing enter and with all validation checks. For this I am using textboxes, but don't know how to do it with grid view.
Plz help